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A safety officer wants to prove that μ = the average speed of cars driven by a school is less than 25 mph. Suppose that a random sample of 14 cars shows an average speed of 24.0 mph, with a sample standard deviation of 2.2 mph. Assume that the speeds of cars are normally distributed. Using the T-table, what is the p-value?
A) 0.001 < p-value < 0.005
B) 0.050 < p-value < 0.100
C) 0.025 < p-value < 0.050
What descriptive summary measures would you use to present the data. which measure is the best to use and which is the worse and why?
What IQ score should one have in order to be eligible for Mensa?
A cola dispensing machine is set to depense 9 ounces per cup with a standard deviation of .5 oz .THe manufacturer would like to set the control limits so that for samples of 16,
Wheel-Rite has agreed to ship the maximum number of wheel bearings that it produces each day to Itex when an order has been received.
Will you reject your null hypothesis that all population means are equal or will you not reject? Choose the best answer from the options below.
Events A and B are mutually exclusive events defined on common sample space. If P (A) 0.5 and P (A or B) = 0.70, determine P (B).
What is the probability that the mean price for a sample of 30 service stations is within $.03 of the population mean (to 4 decimals)?
To determine whether two categorical variables are independent, one should use the:
Compute the proper measure of association of smoking and lung cancer.
Estimate the area under the Normal Distribution from the mean to a z-score of -2.07. Estimate the z-score that corresponds to an area of 0.5557 under the Normal Distribution.
What percentage of bags will weigh more than 16.4 ounces? What percentate of bags will weigh less than 15.92 ounces
The registrar of a college with a population of N=4,000 full-time students is asked by the president to conduct a survey to measure satisfaction with the quality of life on campus.
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